Compared with the buoyant force of the atmosphere on a helium-filled balloon,the buoyant force of the atmosphere on a nearby wood block of the same volume is
A)considerably less.
B)considerably more.
C)the same.

Question

Quizplus · Accepted Answer

The buoyant force depends on the volume of the displaced fluid (in this case, air) and not on the material inside the object displacing the fluid. Since both the helium-filled balloon and the wood block displace the same volume of air, the buoyant force on them is the same.

Compared with the Buoyant Force of the Atmosphere on a Helium-Filled